function s1_hello() {
	echo "hello, world!"
}

function s2_tell_who_i_am() {
	whoami
}

function s3_which_distro_do_i_use() {
	distro=$(grep -oP 'NAME="\K[^"]+' /etc/os-release | head -n 1)
	echo NAME=\"$distro\"
}

function s4_view_my_cpu_arch() {
	uname -m	
}

function s5_show_first_scsi_disk_size() {
	lsblk -l | \grep disk | \grep '^sda' |awk '{print $4}'
}

function s6_show_main_memory_size_in_megabytes() {
	free -m |grep "Mem:" |awk '{print $2}'
}
